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Title: Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets

The Higgs potential consists of an unexplored territory in which the electroweak symmetry breaking is triggered, and it is moreover directly related to the nature of the electroweak phase transition. Measuring the Higgs boson cubic and quartic couplings, or getting equivalently information on the exact shape of the Higgs potential, is therefore an essential task. However, direct measurements beyond the cubic self-interaction of the Higgs boson consist of a huge challenge, even for a future proton–proton collider expected to operate at a center-of-mass energy of 100 TeV. We present a novel approach to extract model-independent constraints on the triple and quartic Higgs self-coupling by investigating triple Higgs-boson hadroproduction at a center-of-mass energy of 100 TeV, focusing on the channel that was previously overlooked due to a supposedly too large background. It is thrown into sharp relief that the assist from transverse variables such as and a boosted configuration ensures a high signal sensitivity. We derive the luminosities that would be required to constrain given deviations from the Standard Model in the Higgs self-interactions, showing for instance that a 2σ sensitivity could be achieved for an integrated luminosity of when Standard Model properties are assumed. With the prospects of combining thesemore » findings with other triple-Higgs search channels, the Standard Model Higgs quartic coupling could in principle be reached with a significance beyond the 3σ level.« less
Authors:
ORCiD logo [1] ;  [2] ;  [3]
  1. Univ. Pierre et Marie Curie, Paris (France). Sorbonne Universites; Centre National de la Recherche Scientifique (CNRS), Paris (France); Institut Universitaire de France, Paris (France)
  2. Univ. of Kansas, Lawrence, KS (United States). Dept. of Physics and Astronomy
  3. Korea Univ, Seoul (Republic of Korea). Dept. of Physics; Korea Inst. for Advanced Study, Seoul (Republic of Korea). School of Physics
Publication Date:
Grant/Contract Number:
FG02-12ER41809; SC0007863
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 771; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1465775

Fuks, Benjamin, Kim, Jeong Han, and Lee, Seung J. Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets. United States: N. p., Web. doi:10.1016/j.physletb.2017.05.075.
Fuks, Benjamin, Kim, Jeong Han, & Lee, Seung J. Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets. United States. doi:10.1016/j.physletb.2017.05.075.
Fuks, Benjamin, Kim, Jeong Han, and Lee, Seung J. 2017. "Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets". United States. doi:10.1016/j.physletb.2017.05.075. https://www.osti.gov/servlets/purl/1465775.
@article{osti_1465775,
title = {Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets},
author = {Fuks, Benjamin and Kim, Jeong Han and Lee, Seung J.},
abstractNote = {The Higgs potential consists of an unexplored territory in which the electroweak symmetry breaking is triggered, and it is moreover directly related to the nature of the electroweak phase transition. Measuring the Higgs boson cubic and quartic couplings, or getting equivalently information on the exact shape of the Higgs potential, is therefore an essential task. However, direct measurements beyond the cubic self-interaction of the Higgs boson consist of a huge challenge, even for a future proton–proton collider expected to operate at a center-of-mass energy of 100 TeV. We present a novel approach to extract model-independent constraints on the triple and quartic Higgs self-coupling by investigating triple Higgs-boson hadroproduction at a center-of-mass energy of 100 TeV, focusing on the channel that was previously overlooked due to a supposedly too large background. It is thrown into sharp relief that the assist from transverse variables such as and a boosted configuration ensures a high signal sensitivity. We derive the luminosities that would be required to constrain given deviations from the Standard Model in the Higgs self-interactions, showing for instance that a 2σ sensitivity could be achieved for an integrated luminosity of when Standard Model properties are assumed. With the prospects of combining these findings with other triple-Higgs search channels, the Standard Model Higgs quartic coupling could in principle be reached with a significance beyond the 3σ level.},
doi = {10.1016/j.physletb.2017.05.075},
journal = {Physics Letters. Section B},
number = C,
volume = 771,
place = {United States},
year = {2017},
month = {5}
}